Electronic Apparatus Automatic Keystone and Leveling Correction
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing electronic apparatuses struggle to automatically correct images for keystone distortion and leveling errors when projected onto a surface, leading to suboptimal image quality due to incorrect arrangement and orientation.
Innovation Solution
An electronic apparatus equipped with a sensor assembly and processor that acquires state information, including inclination and distortion data, to perform automatic keystone and leveling functions, ensuring accurate image projection by adjusting the projection unit's output based on the apparatus's state and the projection surface's characteristics.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If automatic keystone correction is implemented, then image alignment is improved, but device complexity increases
Solution Approach 1:
The projector automatically detects its own arrangement state through sensors (accelerometer, gyroscopic sensor, distance sensor) and performs self-correction without manual intervention. The processor automatically acquires state information, determines correction amounts, and applies keystone correction and leveling functions to correct image distortion and alignment errors autonomously.
Solution Approach 2:
Manual mechanical adjustment of the projector is replaced by an automated electronic correction system. Instead of physically adjusting the projector to achieve correct alignment, the system uses sensors to detect misalignment and electronically corrects the image through software processing, substituting mechanical adjustment with electronic control.
2Device complexity
If manual arrangement adjustment is required, then device complexity is reduced, but image alignment precision deteriorates
Solution Approach 1:
The system eliminates the need for manual user adjustment by implementing automatic self-correction. The processor automatically acquires arrangement state information from sensors, determines the appropriate correction amounts, and applies corrections without requiring user intervention, thereby maintaining simplicity while achieving precise alignment.
3Device complexity
If only keystone correction is performed, then device complexity is reduced, but image quality deteriorates due to horizontal distortion
Solution Approach 1:
The patent combines multiple correction functions (keystone correction for trapezoid distortion and leveling function for horizontal distortion) into a unified automatic correction system. The processor integrates both correction operations based on the arrangement state information, ensuring that both vertical and horizontal distortions are corrected simultaneously to achieve optimal image quality.
Solution Approach 2:
The correction system is designed with multi-functionality, incorporating both keystone correction and leveling functions within a single integrated processor. This universal correction approach handles various types of image distortion (trapezoid and horizontal) using the same sensor-based detection and correction mechanism, improving image quality without requiring separate dedicated systems.
Data Source
AI summary
An electronic apparatus includes a projection unit, a sensor assembly; and a processor configured to: acquire state information including at least one of horizontal inclination information, vertical inclination information, or horizontal distortion information based on sensing data acquired through the sensor assembly, based on acquiring at least one of the horizontal inclination information or the vertical inclination information in the state information, perform a keystone function, based on acquiring the horizontal distortion information in the state information, perform a leveling function, and control the projection unit to output a projection image onto a projection surface.